A phrase/response reserved only
for situations that are so totally absurd, you would
actually be less surprised
if someone was physically shitting on your face.
"Excuse me, I just need
to pay my registration..."
"Sir, like I just told
everyone... You need
to go to window 3, get form B and 36F, fill them out, then
come back here
and I'll give you a number so you can wait in line and we'll get you processed."
"Are you shitting on my face?"